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Clinical Trial Summary

Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder in children and adolescents. Growth hormone and thyroid function are associated with both physical and neurocognitive development. Endocrine disrupting chemicals (EDCs) could disturb the normal function of endocrine systems, and further link to the pathophysiology of ADHD. In addition, whether methylphenidate for treating ADHD influences growth hormone and thyroid function of patients remains unclear.


Clinical Trial Description

Therefore, this study aims (1) to investigate the prospective role of EDCs, growth hormone and thyroid function in clinical manifestations of ADHD; and (2) to determine the influence of pharmacotherapy on growth hormone and thyroid function among patients with ADHD under a one-year methylphenidate treatment. Methods: In this two-year study, we will recruit 120 patients with ADHD (aged between 6 and 16) and 120 age- and gender-matched control subjects. Blood (10 ml) and urine (10 ml) will be obtained from each participant to analyze the levels of EDCs (Phthalates, Phenols and Parabens), growth hormone and thyroid function (TSH, T3, Free T4, T4, growth hormone, IGF-1and IGF-BP3). Behavior symptoms (ADHD-RS and SNAP-IV) and neuropsychological function (WISC, CPT and CATA) of each participant will be assessed. Patients with ADHD will receive treatment in a clinical practice and then will be followed up for 12 months. At the 12th month, the same procedures as those performed at the baseline will be replicated for patients with ADHD. This study will provide proof of the relationships of EDCs, endocrine systems and ADHD manifestations in clinical samples and further explain the biological pathogenesis of ADHD. In addition, this study will elucidate the influence of ADHD medications on growth hormone and thyroid function. Such information may become an important reference for future research and safety of pharmacotherapy for patients with ADHD. ;


Study Design


Related Conditions & MeSH terms

  • Attention Deficit Disorder with Hyperactivity
  • Attention Deficit Hyperactivity Disorder
  • Hyperkinesis

NCT number NCT04970303
Study type Observational
Source Chang Gung Memorial Hospital
Contact
Status Enrolling by invitation
Phase
Start date July 12, 2019
Completion date December 31, 2021

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